1 This man's name is John. You may have met him in the lab.
2 Specialists in modern computer technology must know both Physics Mathematics well.
3 you shouldn't take much cash with you. Take a credit card.
4 all people can learn to work on the computer using special programms.
5 now they must be doing this interesting experiment.
6 Isaac Newton was able to check his theory of gravitation on big astronomic objects after 1665.